公开(公告)号：US20160327618A1

公开(公告)日：2016-11-10

申请号：US15147915

申请日：2016-05-06

申请人： Fu-Te Yuan ,  Pei-Chun Kao ,  Meng-Huang Lai

发明人： Fu-Te Yuan ,  Pei-Chun Kao ,  Meng-Huang Lai

IPC分类号： G01R33/09 ,  G01C17/28 ,  G01R33/02

CPC分类号： G01R33/096 ,  G01C17/28 ,  G01R33/0206 ,  G01R33/091

摘要： A magnetic field sensing apparatus including a substrate, first, second, and third magnetic field sensing units, and a switching circuit is provided. The substrate has a surface, and has a first inclined surface and a second inclined surface. The first magnetic field sensing unit includes a plurality of magnetoresistance sensors connected together to form a Wheatstone full bridge and disposed on the surface. The second magnetic field sensing unit includes a plurality of magnetoresistance sensors connected together to form a Wheatstone half bridge and disposed on the first inclined surface. The third magnetic field sensing unit includes a plurality of magnetoresistance sensors connected together to form a Wheatstone half bridge and disposed on the second inclined surface. The switching circuit electrically connects the second magnetic field sensing unit and the third magnetic field sensing unit. A magnetic field sensing module is also provided.

摘要翻译： 提供了包括基板，第一，第二和第三磁场感测单元以及开关电路的磁场感测装置。 基板具有表面，并且具有第一倾斜表面和第二倾斜表面。 第一磁场感测单元包括连接在一起的多个磁阻传感器，以形成惠斯登电气全桥并且设置在该表面上。 第二磁场感测单元包括连接在一起以形成惠斯通半桥并且设置在第一倾斜表面上的多个磁阻传感器。 第三磁场感测单元包括连接在一起以形成惠斯通半桥并且设置在第二倾斜表面上的多个磁阻传感器。 开关电路将第二磁场感测单元和第三磁场感测单元电连接。 还提供了一种磁场感测模块。

公开(公告)号：US20160313413A1

公开(公告)日：2016-10-27

申请号：US15098560

申请日：2016-04-14

申请人： EVERSPIN TECHNOLOGIES, INC.

发明人： Anuraag MOHAN ,  Phillip G. MATHER

IPC分类号： G01R33/09 ,  G01R17/10 ,  G01R33/00

CPC分类号： G01R33/098 ,  G01R17/10 ,  G01R33/0011 ,  G01R33/093 ,  G01R33/096

摘要： In one embodiment, a TMR field sensor utilizes existing one or more self-test current lines in a configuration to extend magnetic field measurement range without sacrificing measurement sensitivity. The self-test current lines are energized to facilitate magnetic field measurement when the measured magnetic field reaches a threshold. The magnetic field created by self-test coil opposes an external magnetic field being measured to keep the net magnetic field within a desired range where the magnetic field sensor has linear output and desired sensitivity.

摘要翻译： 在一个实施例中，TMR场传感器利用配置中的现有一个或多个自测电流线来扩展磁场测量范围而不牺牲测量灵敏度。 当测量的磁场达到阈值时，自检电流线路通电以便于磁场测量。 由自测线圈产生的磁场与被测量的外部磁场相反，以将净磁场保持在磁场传感器具有线性输出和所需灵敏度的期望范围内。

公开(公告)号：US09453890B2

公开(公告)日：2016-09-27

申请号：US14635111

申请日：2015-03-02

申请人： ASAHI KASEI MICRODEVICES CORPORATION

发明人： Masaya Yamashita ,  Yo Yamagata ,  Ken Tanaka ,  Norihiko Mikoshiba

IPC分类号： G01R33/02 ,  G01R33/022 ,  G01R33/09 ,  H01L43/08

CPC分类号： G01R33/0206 ,  G01R33/09 ,  G01R33/093 ,  G01R33/096 ,  G01R33/098 ,  H01L43/08

摘要： The present invention relates to a magnetic sensor and a magnetic detecting method of the same capable of detecting at least a magnetic field perpendicular to a substrate and a magnetic field parallel to the substrate in a state where the respective magnetic field components are mixed. One embodiment of the magnetic sensor detects a magnetic field of the orthogonal three axes, and includes a magnetic detector including a magnetic field sensitive material configured to detect a magnetic field component in a first direction, a magnetic field direction converters configured to convert a magnetic field component in a second direction and a magnetic field component in a third direction into magnetic field components in the first direction, the second direction being perpendicular to the first direction, the third direction being perpendicular to both of the first and the second directions.

摘要翻译： 本发明涉及一种磁传感器及其磁性检测方法，其能够在混合各磁场分量的状态下至少检测垂直于基板的磁场和平行于基板的磁场。 磁传感器的一个实施例检测正交三轴的磁场，并且包括磁检测器，该磁检测器包括被配置为检测第一方向上的磁场分量的磁场敏感材料，磁场方向转换器，被配置为转换磁场 在第二方向上的分量和在第三方向上的磁场分量成为第一方向上的磁场分量，第二方向垂直于第一方向，第三方向垂直于第一方向和第二方向。

公开(公告)号：US20160223699A1

公开(公告)日：2016-08-04

申请号：US14915050

申请日：2014-03-26

申请人： HONEYWELL INTERNATIONAL INC.

发明人： Andy Peczalski ,  Tom Rezachek ,  Fouad Nusseibeh

IPC分类号： G01V3/02 ,  G01R33/00 ,  G01R19/00

CPC分类号： G01R15/205 ,  G01R15/207 ,  G01R19/0053 ,  G01R19/16547 ,  G01R33/0023 ,  G01R33/096 ,  G01V3/02 ,  H02H1/0007 ,  H02H3/08

摘要： Apparatus and associated methods relate to an in-hole current-measurement system having three or more magnetic-field sensors and a transient-disturbance selection module configured to form an output signal from a selected subset of sensor signals while decoupling the output signals from a non-selected subset of sensor signals during a predetermined time window when a disturbance signal is expected at the non-selected set of sensor signals. In an illustrative example, a disturbance producing operation may be performed on alternating subsets of sensors while the undisturbed subset of sensors measures an electrical current in the electrical conductor. For example, each selected subset of sensors may be aligned on an axis configured to be mounted perpendicular to current flow within a hole in the electrical conductor. Some embodiments may advantageously provide continuous electrical current measurement while being uninterrupted by the predetermined transient disturbances.

摘要翻译： 装置和相关方法涉及具有三个或更多个磁场传感器和瞬态干扰选择模块的空穴电流测量系统，所述瞬态干扰选择模块被配置为从所选择的传感器信号子集中形成输出信号，同时将输出信号与非 - - 当在未选择的传感器信号集合处期望干扰信号时，在预定时间窗口期间选择的传感器信号子集。 在说明性示例中，可以对传感器的交替子集执行扰动产生操作，而未受干扰的传感器子集测量电导体中的电流。 例如，每个选定的传感器子集可以在被配置为垂直于电导体中的孔内的电流流动安装的轴上对准。 一些实施例可以有利地提供连续的电流测量，同时不受预定的瞬态干扰的干扰。

公开(公告)号：US09395210B2

公开(公告)日：2016-07-19

申请号：US14552363

申请日：2014-11-24

申请人： Crocus Technology Inc.

发明人： Bertrand F. Cambou ,  Douglas J. Lee ,  Ken Mackay ,  Barry Hoberman

IPC分类号： G01D5/12 ,  G01B7/30 ,  G01R33/09 ,  G01C17/02 ,  G01D5/16 ,  G01R33/00

CPC分类号： G01D5/12 ,  G01B7/30 ,  G01C17/02 ,  G01D5/16 ,  G01R33/0029 ,  G01R33/096 ,  G01R33/098 ,  G11C11/1659 ,  G11C11/1673 ,  G11C11/1675

摘要： An apparatus includes circuits, a field line configured to generate a magnetic field based on an input, a sensing module configured to determine a parameter of each circuit, and a magnetic field direction determination module configured to determine an angular orientation of the apparatus relative to an external magnetic field based on the parameter. Each circuit includes multiple magnetic tunnel junctions. Each magnetic tunnel junction includes a storage layer having a storage magnetization direction and a sense layer having a sense magnetization direction configured based on the magnetic field. Each magnetic tunnel junction is configured such that the sense magnetization direction and a resistance of the magnetic tunnel junction vary based on the external magnetic field. The parameter varies based on the resistances of the multiple magnetic tunnel junctions. The magnetic field direction determination module is implemented in at least one of a memory or a processing device.

公开(公告)号：US20160169986A1

公开(公告)日：2016-06-16

申请号：US14934240

申请日：2015-11-06

申请人： The Government of the United States of America, as represented by the Secretary of the Navy

发明人： Connie H. Li ,  Olaf M. T. van 't Erve ,  Jeremy T. Robinson ,  Ying Liu ,  Lian Li ,  Berend T. Jonker

IPC分类号： G01R33/09 ,  H01L43/08 ,  H01L43/12 ,  H01L43/02 ,  H01L43/10

CPC分类号： G01R33/096 ,  H01L43/08 ,  H01L43/10 ,  H01L43/12

摘要： A method for directly electrically generating and detecting spin polarization in topological insulators comprising depositing a first and fourth contact on a layer of Bi2Se3 and applying a current between the contacts, which creates a net spin polarization due to spin-momentum locking. A second (comprising ferromagnet/tunnel barrier) and third contact are deposited for detecting the spin polarization. A device for directly electrically generating and detecting the current-generated spin polarization in topological insulators, comprising a first and fourth contact on a layer of Bi2Se3 and a second contact comprising a ferromagnet/oxide tunnel barrier contact as a detector, and a third contact comprising nonmagnetic metal as a reference contact, a current to the first and fourth contact to produce a net spin polarization, and the spin polarization manifesting as a voltage between the second (magnetic) and third (reference) contacts.

摘要翻译： 一种用于在拓扑绝缘体中直接电产生和检测自旋极化的方法，包括在Bi2Se3层上沉积第一和第四接触并在触点之间施加电流，由此产生由自旋动量锁定引起的净自旋极化。 沉积第二个（包括铁磁体/隧道势垒）和第三接触点以检测自旋极化。 一种用于直接电产生和检测拓扑绝缘体中的电流产生的自旋极化的装置，包括在Bi 2 Se 3层上的第一和第四接触以及包含铁磁体/氧化物隧道势垒接触作为检测器的第二接触，以及包括 作为参考接触的非磁性金属，到第一和第四接触的电流以产生净自旋极化，并且自旋极化表现为第二（磁）和第三（参考）触点之间的电压。

公开(公告)号：US20160161574A1

公开(公告)日：2016-06-09

申请号：US14563042

申请日：2014-12-08

申请人： Infineon Technologies AG

发明人： Jürgen ZIMMER

IPC分类号： G01R33/09

CPC分类号： G01R33/093 ,  G01R33/096 ,  G01R33/098

摘要： A magnetoresistive sensor may include a stripe portion comprising magnetoresistive material. The stripe portion may have a stripe width extending along a first axis from a first stripe edge of the stripe portion to a second stripe edge of the stripe portion, a length along a second axis that is substantially perpendicular to the first axis, a first end, and a second end. The first end and the second end may be positioned at opposite ends of the stripe portion along the second axis. The magnetoresistive sensor may include an extension portion comprising magnetoresistive material. The extension portion may be positioned at the first end of the stripe portion, and may have an extension width along the first axis. The extension width may be larger than the stripe width, such that the extension portion extends beyond the first stripe edge and the second stripe edge.

摘要翻译： 磁阻传感器可以包括包括磁阻材料的条纹部分。 条带部分可以具有沿着第一轴线从条形部分的第一条带边缘延伸到条纹部分的第二条纹边缘的条带宽度，沿着基本上垂直于第一轴线的第二轴线的长度，第一端部 ，和第二端。 第一端和第二端可以沿着第二轴定位在条形部分的相对端。 磁阻传感器可以包括包括磁阻材料的延伸部分。 延伸部分可以位于条形部分的第一端，并且可以具有沿着第一轴线的延伸宽度。 延伸宽度可以大于条带宽度，使得延伸部分延伸超过第一条纹边缘和第二条纹边缘。

公开(公告)号：US09354284B2

公开(公告)日：2016-05-31

申请号：US14271620

申请日：2014-05-07

申请人： Allegro Microsystems, LLC

发明人： Alexander Latham

IPC分类号： G01R33/09 ,  G01R33/07 ,  G01B7/30 ,  G01R33/00

CPC分类号： G01R33/09 ,  G01R15/205 ,  G01R33/0041 ,  G01R33/07 ,  G01R33/093 ,  G01R33/096 ,  G01R33/098

摘要： A magnetic field sensor for sensing an external magnetic field includes at least one magnetic field sensing element for measuring a magnetic field produced by a first magnetic field generating source and a current generator configured to receive one or more drive current signals at an input thereof and to generate a drive current signal having a periodic waveform and an amplitude offset at an output thereof. Also included is a second magnetic field generating source configured to receive the drive current signal at an input thereof and in response thereto, provide a magnetic field to the at least one magnetic field sensing element. Additionally included is a comparator configured to receive a reference voltage as a first input and an output signal from the at least one magnetic field sensing element as a second input, and in response thereto to generate a comparator output signal having a duty cycle. Further included is a compensation circuit configured to receive the comparator output signal having a duty cycle at an input thereof and to generate an offset signal for correcting the duty cycle to a predetermined duty cycle as an output. A corresponding method is also provided.

摘要翻译： 用于感测外部磁场的磁场传感器包括用于测量由第一磁场产生源产生的磁场的至少一个磁场感测元件和被配置为在其输入处接收一个或多个驱动电流信号的电流发生器，以及 在其输出端产生具有周期性波形和振幅偏移的驱动电流信号。 还包括第二磁场发生源，其被配置为在其输入处接收驱动电流信号，并响应于此，向至少一个磁场感测元件提供磁场。 另外包括比较器，其被配置为接收作为第一输入的参考电压和来自至少一个磁场感测元件的输出信号作为第二输入，并响应于此产生具有占空比的比较器输出信号。 还包括补偿电路，其配置为接收在其输入处具有占空比的比较器输出信号，并产生用于将占空比校正到预定占空比的偏移信号作为输出。 还提供了相应的方法。

公开(公告)号：US09279867B2

公开(公告)日：2016-03-08

申请号：US14669762

申请日：2015-03-26

申请人： STMicroelectronics S.r.l.

发明人： Enrico Pozzati ,  Carlo Alberto Romani ,  Fabio Bottinelli

IPC分类号： G01R35/00 ,  G01R33/09 ,  B82Y25/00 ,  G01R33/00

CPC分类号： G01R33/096 ,  B82Y25/00 ,  G01R33/0023 ,  G01R33/093

摘要： Described herein is a biasing circuit for a magnetic-field sensor; the magnetic-field sensor is provided with a first detection structure, which generates a first electrical detection quantity as a function of a first component of an external magnetic field, and a second detection structure, which generates a second electrical detection quantity as a function of a second component of an external magnetic field. The biasing circuit electrically supplies the first detection structure and the second detection structure in respective biasing time intervals, at least partially distinct from one another, which preferably do not temporally overlap one other.

公开(公告)号：US09244135B2

公开(公告)日：2016-01-26

申请号：US14009441

申请日：2012-05-11

申请人： Tomokazu Ogomi ,  Hiroyuki Asano ,  Toshiaki Shoji ,  Takeshi Musha ,  Jin Inoue ,  Masaaki Okada ,  Miki Kagano ,  Kazuya Makabe ,  Kenji Shimohata ,  Takeshi Kishimoto

发明人： Tomokazu Ogomi ,  Hiroyuki Asano ,  Toshiaki Shoji ,  Takeshi Musha ,  Jin Inoue ,  Masaaki Okada ,  Miki Kagano ,  Kazuya Makabe ,  Kenji Shimohata ,  Takeshi Kishimoto

IPC分类号： G01R33/09 ,  G01D5/14 ,  G07D7/04 ,  G01N27/72

CPC分类号： G01R33/09 ,  G01D5/147 ,  G01N27/72 ,  G01R33/096 ,  G07D7/04

摘要： A magnetic sensor device includes a first magnet and a second magnet that are disposed on mutually opposing sides of a conveyance path, and one of poles of the first magnet faces an opposite pole of the second magnet. The first magnet and the second magnet generate a cross magnetic field whose strength in a spacing direction, which is orthogonal to a conveying direction, is within a predetermined range. An AMR element is located in a magnetic field in which the strength of the cross magnetic field in the spacing direction is within a predetermined range, and detects, as change in a resistance value, change in the cross magnetic field caused by an object to be detected. A multilayer board outputs the change in the resistance value detected by the AMR element to a processing circuit.

摘要翻译： 磁传感器装置包括：第一磁体和第二磁体，其布置在输送路径的相对的相对侧上，并且第一磁体中的一个磁极面对第二磁体的相反极。 第一磁体和第二磁体产生与传送方向正交的间隔方向的强度在预定范围内的交叉磁场。 AMR元件位于磁场中，其中间隔方向上的交叉磁场的强度在预定范围内，并且作为电阻值的变化，检测由对象引起的交叉磁场的变化， 检测到。 多层板将由AMR元件检测的电阻值的变化输出到处理电路。